Sosha, Alisha and Carly are wondering what kind of diaper provides the best protection against leaks. Would a regular adult diaper or a pull-up be better? To settle the question they decide to take a scientific approach.
Their methodology is as follows: They would wait until they were all extremely desperate to pee. Alisha would pee in a pull-up while Sosha would use an adult diaper. Carly would simply pee in her pants without any kind of a diaper as a baseline control. They would then compare any leaks that may result to see which kind of diaper is best.